Territory



(No Model-) J. P. OULVER. WATER, GAS, SEWER OR'DRAIN PIPE.

No. 265,306. Patented Oct-3, 1882.

NITED STATES PATENT OFFICE.

JOHN P. OULVER, OF TUCSON, ARIZONA TERRITORY.

WATER, GAS, SEWER, OR DRAIN PIPE.

SPECIFICATION forming part of Letters Patent No. 265,306, dated October3, 1882.

Application filed September 24, 1881. (No model.)

To all whom it may concern:

Be it known that I, JOHN P.OULVER,OfTl1C- son, county of Pima, andTerritory of Arizona, have invented new and useful Improvements inWater, Gas, Drain, or Sewer Pipes; and I do hereby declare the followingto be a full, clear, and exact description thereof.

My invention relates to certain improvements in the formation ofcontinuous pipe for the purpose of conveying water, gas, or other fluidsor liquids; and it consists of sheets of metal sufficiently long to formthe sections, and of a width toforin two or more thicknesses when rolledinto a pipe of suitable size. The sections are formed by rolling thesheets in a bath of molten solder, which, flowing between thethicknesses of the metal, unites it into a solid multiple-walled tubeduring the operation of rolling, and, without further treatment of anykind, having the outer surface finished with a coating of tin. Thepipe-sections thus prepared may be joined in any desired manner to formthe lengths required when laid.

Referring to the accompanying drawings for a more complete explanationof my invention, Figure 1 is an end view of my pipe. -I ig. 2 is alongitudinal View.

B B are sheets ofinetal, which, if of tin, zinc, or galvanized iron,will need no preliminary preparation, but if of plain sheet-iron orother metals must first be prepared to receive the solder or unitingmetal. When the sheets are in readiness they are rolled in a bath ofmelted solder which is of sufficicnt length to receive the sections, andare rolled into a pipe of the desired size, a quantity of the meltedsolder being carried forward and spread between the laps of the sheet asit is rolled up, thus coating and uniting the laps, so that when coldthe whole will be united into a solid body, D, consistin g of two ormore laps or thicknesses of sheet metal having the interior and exterioredges, A A. These sections are left open at both ends, and when they areto be used any number of them maybe united endwise by suitablecouplings, so as to form a continuous tube or pipe of any desiredlength.

I am aware that short cylinders of metal have been placed one withinanother with an intervenin g fusible metal and afterward sweatedtogether, and also that sheets of metal have been first coated with tin,then coiled into a short cylinder, and finally sweated together previousto applying heads, so as to form containingvessels, and I do not claimthis method, nor the containing-vessels when completed.

I am also aware that in a former patent issued to me October 14, 1879,tubes or pipes were formed by rolling up sheets of metal with anintervening body of asphaltum; but this is not such a-pipe as iscontemplated in my present patent, as there is no bond or union be tweenthe layers of metal, and the heat of the sun will cause-the parts toseparate.

What I do claim as new, and desire to secure by Letters Patent, is I Asa new article of manufacture, an openended tube consisting of a sheet ofmetal rolled or overlapped to form the required diameter, and providedbetween the folds with solder suitably applied and adapted to set,thereby constitutinga homogeneous solid cylinder, substantially as setforth.

In witness whereof I have hereunto set my hand.

JOHN P. OULVER.

WVitnesses HENRY CAMPBELL, R. K. EsTILL.

